Exothermic device



IN V EN TOR.

F. RACEN EXOTHERMIC DEVICE Y Filed Sept. 11, 1942 F IG 1.

May 4, 1943.

FERDINAND R BY l v a Patented May 1943 .asu/8,420A

Ferdinand Racen, University City,

Mo., assignerto W. G. Shelton Company, St..Louls, Mo., a corporationofMissouri v Application september 11, 1942, serial No. 457,941

vclalma 'Ihe invention relates to exothennic pads and is particularlyadapted for pads used in theA waving of human hair. 'I'he inventionconsists more particularly in a novel container for the exoi thermicmaterial.

Reference ismade to the present applicants Patent No. 2,110,677, issuedMarch, 1938, disclosingl an exothermic material container, one side of'which consists of paper, or other material which is readily permeableby moisture, and the other side of which consists of material which ishighly resistant to the passage of moisture and preferably is a metalfoi1 which will reilect heat generated in the container.

As ls well known, the present demand for most metals and metal foils forwar munitions and I supplies is so great that many metalsv areunobtainable for general use.A This condition restricts and sale and useof the preferred construction of the device described in theabove-mentioned patent.

The present invention has general objects similar to those of theinvention described in the above-mentioned patent and has the additionalobject of eliminating the need of metal foil in the container withoutdetracting from'the effectiveness of the container for its intendedpurposes.

Another object of the invention is to decrease the expense of anexothermic pad of the class described. A

These and other detailed objects of the invention are attained by thestructure described below and illustrated in the accompanying drawing inWhich- Figure 1 is a view of one side of a container for exothermicmaterial, portions of one wall of the container being broken away andindicated ,diagrammatically to morenclearly illustrate its construction.

Figure 2 is a view of the opposite Side of the container.

Figure 3 is a longitudinal section taken on the line 3 3 ofFigure 2, thethickness ofthe parts being increased in proportion to' their width andlength to better illustrate the construction.

The container consists primarily of anenvelope v f of paper orlikematerial through which pow'- dered material moisture, applied toitsouter face, will be readily transmitted to the interior of the envelopeandto its contents. 'I'his envelope may be formed of a single sheet ofmaterial doubled on' itself and `provided with tabs 2, 8 and 4 to befoldedover as indicated. `Tabs 2 and 3 are securedto the sur will notsift but through which terial is inserted. Ta'b 4 is then folded ,over

eventually may prevent the manufacture,

as shown in Figure 2 and, secured by adhesive in the'same manner as tabs2 and 3.

Prior to filling the envelope withthe eirother v y mic substance andpreferably prior to formation f of the envelope, there is applied to anarea of the paper corresponding to one wall Vofthe iinished envelopesuccessive imprints of ink forming a substantially solid coverage forthe selected area. Preferably the first of these imprints 5 is of anyordinary printers ink, fcr example as may be made from a iinseed oilbase with additions ofv resin, soap, customary.

Over this initial imprint, which acts somewhat as a filler for the paperand a backing for other imprints, there is applied one or more imprintsor layers of a metallic ink such, for example, as consists of a body ofordinary ink to which has been added a quantity of metallic powder.` AnY example of such an ink would comprise fifty per cent of ordinaryprinters ink and fty per cent of ground bronze. Two such imprints orlayers are indicated at 6 and 1.' y

After this imprinting, the, envelope is completed and is filled withexothermic material 8 and flap d folded over and sealed as shown inFigures 2 and 3. An exothermic pad so constructed may be manufactured,stored, shipped and handled freely up to and throughout its applicationwithout loss of exothermic material, as characterizes. the use ofexothermic pads formed of meshed fabric or of paper which is to beperforated prior to its application to the hair.

When the pad is used, a, strip 9 of :flannel or v- I Y `similar materialmay be wrapped around the wound strand of hair and the 'pad may beapplied to the wound strana of haii with the pain paper wall next to thesaturated .substance contained in the envelope and thereby ,generate theheat required for the waving operaition. Instead'ofusing a strip 9, theinner face of the pad may be moistened by a brush or swab or the padmaybe dipped bodily into a quantity of reaction-starting fluid.,

The oilvarnish-metal/ components of the im' a printed portion of the'printed inks render the envelope impervious to moisture, at least to thepigment and'drier, as may be v strip 9. Spring clips or other holdingmeans are then applied quantities of moisture applied to the envelope vdeparting from the spirit of the invention, and

the exclusive use of such and other modiilcations coming within thescope oi' the claims is contemplated. A

What is claimed is:

1. As a new article of manufacture, a container and an exothermicsubstance therein, saidcontainer comprising a pocket-like'member formedof material which readily transmits to said substance moisture appliedto the exterior surface, one wall of the container being provided withacoating of substantially moistureprooi adhesive fluid..

2. A device as described in claim 1 n which the coating of the one wallof the container'includes metallic ingredients for reilecting the heatgeneratedinthe device. r

3. A device as described in claim 1l in which the coating of the onewall of the container comi wall of said envelope being imprintedsubstanprises an imprint of ametallic ink substantially throughout itsarea.

4. A device as described in* claim 1 in which the pocket-like membercomprises an envelope of paper and the coating consists of an imprint ofa metallic 'ink extending substantially continuously over one side ofthe envelope.

5. A container for exothermic substance comprising an envelope ofpaper-like material which is readily permeable by moisture, the envelopehaving one wall imprinted substantially throughout its area with a layerof metallic ink.

6. An imperforate envelope for containing exothermic material andapplicable therewith as an individual unit to a wound strand of hair,

`said` envelope being made of material characterized by a high degree ofcapillarity and one tially throughout its area with successive layers ofa metallicink to render that wall impervious to moisture and reflectentof heat.

7. A container for exothermic substance comprising an envelope ofpaper-like material which is readily permeable by moisture, there beinga layer of ordinary pri-nters ink imprinted on one wall of said envelopesubstantially throughout its area and there being a layer of metallicink imprinted over said mst-mentioned layer substantially throughout thearea of the envelope wall. y

FERDINAND RACEN.

